The present invention provides glass for a fluorescent lamp, comprising: CeO₂ of 0.1% to 1.0%, Sb₂O₃ of 0.05% or lower, SiO₂ of 60% to 75%, Al₂O₃ of 0.5% to 10%, B₂O₃ of 0% to 5%, CaO of 0% to 8%, MgO of 0% to 8%, SrO of 0% to 15%, BaO of 1% to 12%, R₂O of 13% to 22% (R represents Li, Na or K), Fe₂O₃ of 0% to 0.2%, TiO₂ of 0% to 1.0%, and PbO of 0.05% or lower, the percent each being by mass; a glass tube for a fluorescent lamp comprises the above glass; and a fluorescent lamp comprises the above glass tube as an envelope.